Home > Iowa Academy of Science > Journals & Newsletters > Proceedings of the Iowa Academy of Science > Volume 81 (1974) > Number 2
Volume 81, Number 2 (1974)
Issue cover date: June 1974
Front Matter
General Interest Article
In Memoriam: Jean Luther Laffoon, 1922-1973
William H. Robinson, Oscar E. Tauber, and Robert E. Lewis
Research
Discrimination Between Mediated Facilitation and Mediated Inhibition Items p. 41-42
Bruce K. Britton
Upper Pennsylvanian Missourian Corals of Iowa p. 43-50
J. M. Cocke and Joan Mussler
A Preliminary Study of Echinoderms with the Aid of a Scanning Electron Microscope p. 51-55
H. L. Strimple
Occurrence of a Ctenacanthoid Shark Spine from the Upper Devonian of North Central Iowa p. 56-60
Markes E. Johnson
Notes on Diatoms from Waters of Two Drainage Tiles in Northwest Iowa p. 61-67
Michael L. Edwards
Effects of Estrogen and Progesterone on Serum Ionized and Total Calcium in Ovariectomized Rats p. 68-71
Edward L. Hatcher and Robert J. Simpson
An Improved Holding Chamber for the Measurement of Oxygen Consumption in Mice p. 72-72
Kenneth M. Cook and Thomas J. Doody
Age and Growth of Shovelnose Sturgeon, Scaphirhynchus platorynchus (Rafinesque), in the Mississippi River p. 73-75
Don R. Helms
White-Tailed Deer Movement at Pilot Knob State Park, Iowa p. 76-82
Michael D. Zagata and Arnold O. Haugen
White Leghorn Egg Production During Traffic-Noise Stress p. 83-84
Albert Kagan and Charles J. Ellis
Radiative Heat Loss from Skin to Cold Glass Windows p. 85-88
L. K. Lassahn, G. E. Folk Jr., and C. H. Seberg
An Investigation of the Possible Occurrence of Sterols in Blue-Green Algae p. 89-90
Gene F. Lata
Back Matter
